If you need to calculate the indices of Functional diversity, you could use a macro I have written. Please, note, that I am very bad in programming, and I do this only if I do not have a chance to find relevant software (which was the case here). Consequently, the use of the macro is very clumsy. It is an Excel workbook, with several Macros for calculation of individual steps. Here, you can download the Excel workbook, and the Instructions, how to use it, written by Francesco de Bello (mostly) and myself. Last modification posted on September 30, 2008 (new examples, and improved manual)